{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb726ebe0f036b10088e2c0817815bf70e37f878f23f08db6a0646343c5bb6274",
    "signature": "0xb4b0d6ab477fa077d5e59a5f43386eb6a597d7edb2d5e04d9c21086a145f9a4217e48f024e7ff9464bc3096f9449418b93888f8c2744acd3ef2a655fd1d952441c",
    "signer": "0x63D37a1f9d1ab8A2236976d88D55a53105594C3C",
    "userId": "15585886"
  }
}