{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0x72a3d2d8073e5d71d7e05da9aafaaebab522dca0aefcd0b96e4e88a47f08b17d",
    "signature": "0x2aa16b14b40a976686f239feec2c7eb698f9cbf1ad3d5323ec14edd8e65a539f459ec58924b1b7ceaeec90089ee33146766c5bcfea10cc1073e88c04f8d5219e1b",
    "signer": "0xe6694Cd4e9B035f05AfC0e12202adfeECa1Df55B",
    "userId": "473091022"
  }
}