{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0x1901512135e9cf389f7dd39bf213c979d9595a9aec3204773289ab309beda671",
    "signature": "0x982a6fb14da2b63b98c372f469ff80af4fa21953f07c3a7d57794a3564f302662fd265ef0e12bdfcd425069e1433da2a5be47243f4c77f5cc5004dab2baf739d1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}