{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6a91f7d34c894d402360c346e4b2207b53211d00ee2508260666982c67408ea9",
    "signature": "0x690691d56577e30a0da610150796031c880a4d44a397f30f5bb00b05f86eb6814d0579d16086cb467f311ae9a2de8ee80461f81279fc20ae735f33cca1578aea1c",
    "signer": "0x1605280F766245672428d1a355099f45E7F5e508",
    "userId": "447422834"
  }
}