{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x23ee27ddb18238ad5ae4ef09498757dde0c1cd0df05019b191b4ded50f3aaf36",
    "signature": "0x2e5e17b2a461088ca5b596aabdf4ae7630f5954aac0cf6ee19197d6b19f8bd0c01c374e2ce0cdda99b09669d49b0f699a07a0613efc210302c5828c9fece37a61b",
    "signer": "0xc99f8660f0b69439bc35Cb5177Cf4435e22FbB2d",
    "userId": "868524168"
  }
}