{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc43c575590a6361608e56a4ae9afa23bde0ed7c4e00b23e489f33acc9b8a6a76",
    "signature": "0xec0d7e68dc4b2a2a5d1ee3ac88e991ca2352632911849d42ec4f2e1f76b9b91975096a32d47ba42d21de8b1bd218a1393274f4298849326059a2b77f8b70708e1c",
    "signer": "0x5f950b4Af195b1A91Ed521De4Edd9533a68dcE5C",
    "userId": "305353649"
  }
}