{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb11d5c3ed60e4a9920bb34960f99793268be0a944a0d02a4cba6b145899fccb9",
    "signature": "0x69ce685c22b947b217439f2c98adea454157b0a4c33733447724b63e8f71102c63f81491dc021bf175d6aaa0fede708cdf34cdde848382bcf1b2ac3f57cc296f1b",
    "signer": "0x21Fb3eD255Fcf0E2Dfb4edC4e1706D176Ec986c2",
    "userId": "756773222"
  }
}