{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319025881",
    "entityType": "User",
    "nonce": "0xfd9e19207f1c10ed78333dd8d161c10f52fbea6b8d74edc8f5173e1e1f65d33a",
    "signature": "0x512e3a19346313e48d2f8b8baf676bad449a4fac77f8c3d156ecb4cf490cc3317270f5c9249847f32374cbacc6f427132fb1d4911fd437671c319ccf1ed761a21c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}