{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x17e868be6e79e32b413cc290be4b48debeea4d2310fa738b6a567f7690ad9343",
    "signature": "0x72d4528fcf2e6dd06863c6ddc7583e6250d094814ed825899bd568d9334ab17717d39812755e738648d8ff0b4e12ad1177061332008fce046f8cfdf3e620f5021b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}