{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307",
    "entityType": "User",
    "nonce": "0xbc13c7f33d33fa65e793ba8934f3dd564350fe95e473f3cf0c713d9e45ff6495",
    "signature": "0xe866a4e9cc888a630594f5ccce5183ab90e1b2d65cd5813851f0da92b4ec333864bb9c6141a1bb355fd36e992904934c7d35ecb990f3ded050a50924f527f5501b",
    "signer": "0x0A12991752297225e963f7A8114b3d183aae77Db",
    "userId": "969021050"
  }
}