{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102532",
    "entityType": "User",
    "nonce": "0x40c1ba8310356ccbed1b58b04b6b6f6588277b0e540a0c16934e664ede9ea464",
    "signature": "0x532e30ef1e2013a1e60fce6868aecc1140681be5ce0ba7b312617e22898e0732178d457bbae9c88b5cb7cbe40936f2d1bdd3821842aa4d9f70049aea4090e87a1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}