{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854614078",
    "entityType": "User",
    "nonce": "0x134de4a93fbfc8258b4a1b175fc290f4544baed6de884fe66a3cf0c4eedf70e3",
    "signature": "0x75af2d5427f56ae4ce5ff72876faba71d4c9cf0d171b0b7bdda7c3f148092a1c252b082b655a4422e8ad7e4724c931d88acdcb6681fe8bcab2f3a7447e629f821c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}