{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "481929979",
    "entityType": "User",
    "nonce": "0xf203c096ee5cae4b20adff49ef88d26ac8e06652f2c5b9ad74a896632a0af060",
    "signature": "0x8c6b96565dd3935980f0739dd4e395fc612cca6f1669a7e816cd19e04c26b21f110c2977e62a998dd1cc6872dce22dcd2950789a764d3402d3446b7f82d071941c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}