{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "942771296",
    "entityType": "User",
    "nonce": "0x599e4373a8f4c78ffe64c148d72e458abf97b93661af7e751f3c47549e137126",
    "signature": "0x21acd68c3155088c45c5d025cad88866638285296ef4dd3f0a9d28aba8d6a8c97b71791ad6c2bfe4a65f1917a2ae396bf26dc0a5dd1d399c01e5b33057ebc6531c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}