{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd7b4025529eebd602b131b18423d6c3b39c587a63a4c39c75d4fcfa6269a9ef3",
    "signature": "0xf0af107d89bdec1574e529f06763bd49ea02930c55e28851f21d550969cd008d2c9cc3c04a1d85eeff6b82f61c13c1b35dcb6ed7409d9f42a2f9507ce33bb0951c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}