{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x30720820a894a274bafcedf3f2eba300777e7e16030b51ed7189c235e550b24a",
    "signature": "0x57c6ed5d19fb00682b1c769f512b01dd4b817d8de2efaa445380ee8e2c81c90426d33d6705e117afeec0c1fbb64413e5872b5d0b43ee8565f5d53eb368b4d9f61c",
    "signer": "0xda56c0f03A5D29828f03c37244abe9bC6ed4536D",
    "userId": "653618610"
  }
}