{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5df4874666af607bf3b02c7764a4c244e74c90b7bddf883a26703c312b5b14d4",
    "signature": "0xb3e9a9b692ec3bcb8163124dd34534cf7bcc31c2ca9e026891b14926870f389e67b249767da1e1ebf99df98c139ac887f1662bb474e0ea5fa24445260b831e6b1c",
    "signer": "0xE49D51d77fBDcB30555671D696526c7c0bD4e0A6",
    "userId": "7910918"
  }
}