{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf64e3b7d3830710bd39eb17fc527ae3eb124b1858fe0a117ef7782ae34270a1d",
    "signature": "0x06da23a2dd806c3cd956e57b4e7a4d1779266f316715e5c47e1bb2fb4188032e4023af82cf76b422c28f12f6e02fdd5586db1a132366afb0104e4265e7dece2e1b",
    "signer": "0xd810255aC9c07117E0a020D66Ef18A7f8E6E91d9",
    "userId": "356383741"
  }
}