{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "603549127",
    "entityType": "User",
    "nonce": "0x0aecb246a1dfe37ac34f59adba8aee9ccd9c6e5d8ea15e833d3e4e3bd80386c5",
    "signature": "0xa222d348dcc501871802be533f4e04126054bdd86336a40c657e3a778d96e7a21d26b326673e4e494650c8556f90c3e7b0b5726f5dacd34b5f9ab5107fd791d81b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}