{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe4e03f8bd9fac2b3603359fe5df2fd9d003364490d3c954843f65ab53e72b04f",
    "signature": "0xa5b03d4783a3b3484e897e07b8756d5debbb24481a6824da4cbd2a9c5825d5194db6886eb7bdb2d6fc22ef4abbfca36632a479cbe99aa93bb9da7b3767bb84ef1b",
    "signer": "0x2B023F6B15A25e65EB374dd5f3F2beF64B17fD5F",
    "userId": "315709354"
  }
}