{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xda3c884e01cfc4088467342952de59cde24794816dc1861dd867df6db407fb0a",
    "signature": "0xf1ad0001f5337d693fdda39ee169ff738931b9a555db6881daae50002e50c0627697fcfdd3721f08573f08acff20767d2068ecc2a0a31088517e1b46d4215d981b",
    "signer": "0x1357C975771Bd93b642d21c48Ef731f652C4033B",
    "userId": "601396677"
  }
}