{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1646345",
    "entityType": "User",
    "nonce": "0xa4d31f65801d85d83e9824ba6f87b36674575e62f833a879b9ba9754de1f8157",
    "signature": "0x76915ef14a050b814279df1ef4d0741838a33f96ed53c4c132ef670b03a34a1d1d5c945d7a25f5ec056a892012aca08172820e11a2ac7387a602bcde0283ea611c",
    "signer": "0xf4932982eB30F083aAeE8850Fe5d411b7A5Df5a5",
    "userId": "746635137"
  }
}