{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x48f4b7528e4d9ab0f00335ed6958c2fb2020f9320a784e92c87fc55090b97a82",
    "signature": "0xf81554b1ef957070fa623861458a0003d9a83cea779ac539d04a05304f6449782d314bafab120aa3db85d0bda15412ecf1e2a77d6b7f275dfd86ce83db52337d1b",
    "signer": "0x4d6701aee41cF386F0f1Dc360F47F200983c6c62",
    "userId": "454478631"
  }
}