{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x19754726235217c6cbd9e9d2c9ca7dee8d5b2c9c39b764f552b7cc87659bda50",
    "signature": "0x3f28d8ddda53a49cc6f34c269fa5a77c2c68bfee3f0a1915384689259d9f1c084df53e7f9a898dbfc969fb9cc12d3c4c84dd23f1881dbf1d72adc2edd66e323b1c",
    "signer": "0x2f5F569A0543B8efa25CB381d41C74c6aabCdd9d",
    "userId": "144785627"
  }
}