{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x54cc001c585d71872fea8e8fdc382394b6727515a6e3dfbf6d36d45f83fa7cf5",
    "signature": "0x722eb4cceb3a77405b2a1b9acbeb2829dba8654695398fb4476e1f1da710fe464b895f1c101355c3e31fa6114d7201378baacd87660171ab00c732e02d486ff91b",
    "signer": "0x7326EB1068bE8c241c206A096bC9404C021bC3c6",
    "userId": "420697681"
  }
}