{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x3d7022469dd5c746b6725e7139baf7a2b170f41ee26cc427193dfcf6abcfdf5e",
    "signature": "0x149c2679a372cd300dc91f106a354a7092487d5d36b09446fbf49506aca1fd93450ec919cd03e12289265f086d0f33fcc0ff1fe2ad65a207da65786244439af41c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}