{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601282125",
    "entityType": "User",
    "nonce": "0x70f4b3334583c102fadf42b2d5e40440b2445c21731d580d7f886b3c5ae12d25",
    "signature": "0x48367dde25c28948b4c9a7fd1cb20db96e4fc7164f5902dd59fd6e3626fed29043999eca7ba91e413508ea8ff96b270ee3c3199c94e9aab97a7207d8e169ca1d1b",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}