{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x392f613399ac5b202aebfbe5091972b8b68280e8e9fbda2e42735fa8eb4b32f1",
    "signature": "0xd2e88796789dacd8613921681cc7a943fd73c5c398cf381e8fe230a56fbc913d6557fc2d380c7854c4448c25ed8837e5c7a274e379fc65769b5f91155143d0241c",
    "signer": "0x2a4d25c1632c56B024F0b1D1E12D7F57432798c3",
    "userId": "559294211"
  }
}