{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "735980234",
    "entityType": "User",
    "nonce": "0x32038aa5779c0ff747c5615bbeff30755bff075fac8d9b5319bba80c3e481144",
    "signature": "0xd1712686a501d82b432d6762e7c3c51cf4d51059e0220455d4cc38010de4a4493ae72abd2ac41ce427d2295c3e5f064dd42e50ae1c580d6cd6cd13bffbc2bfe81c",
    "signer": "0x854726bE5910ceEe19fBd2D4CE0518966CA41382",
    "userId": "124312"
  }
}