{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125412",
    "entityType": "User",
    "nonce": "0xedfd4aa95c07ea9bc59766e47ea1524af5ea7218c904477b4dee9a5ba305fc13",
    "signature": "0x93e14a5d89ad4e5801d6e2d8a0798a06a154a44282ea504c62c8038f51dd5ed24a0b864239127a8491fc11244d0bb5e8cccc3743f65768ccfef6b5755af8b6151c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}