{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755275",
    "entityType": "User",
    "nonce": "0xb46a3230de99fdc21f125b91e90c3aeaf0de9050aea0fe4deca5f38c0ecdccce",
    "signature": "0xb07eb1b08395d103c1d3aecb7d0f244330415de4f378a4e6e792c60916389f1455fa45606228a9295a111d560a54e5f90dbce403db27c418ad355a938ac669311b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}