{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383930",
    "entityType": "User",
    "nonce": "0x44148b7cfea1bc0b8f809c0d3c557180b8758d0577cfca9c12471079f28d2b93",
    "signature": "0x94a51a9364306dfacdec8e2de9b2246e068bf651c3236b261045d851c32ad1ae611771488b54355202b9c2ba3245484ee5b328e8d7b88c96a0ac38b0b1768d1d1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}